Package org.eclipse.rdf4j.query.algebra.evaluation.impl

Class QueryJoinOptimizer

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.optimizer.QueryJoinOptimizer

org.eclipse.rdf4j.query.algebra.evaluation.impl.QueryJoinOptimizer

All Implemented Interfaces:

QueryOptimizer

@Deprecated(forRemoval=true,
            since="4.1.0")
public class QueryJoinOptimizer
extends QueryJoinOptimizer
implements QueryOptimizer

Deprecated, for removal: This API element is subject to removal in a future version.

since 4.1.0. Use QueryJoinOptimizer instead.

A query optimizer that re-orders nested Joins.

Author:

Arjohn Kampman, James Leigh

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	QueryJoinOptimizer.JoinVisitor	Deprecated. This class is protected for historic reasons only, and will be made private in a future major release.

Field Summary

Fields inherited from class org.eclipse.rdf4j.query.algebra.evaluation.optimizer.QueryJoinOptimizer

statistics

Constructor Summary

Constructors

Constructor	Description
QueryJoinOptimizer()	Deprecated, for removal: This API element is subject to removal in a future version.
QueryJoinOptimizer(EvaluationStatistics statistics)	Deprecated, for removal: This API element is subject to removal in a future version.
QueryJoinOptimizer(EvaluationStatistics statistics, boolean trackResultSize)	Deprecated, for removal: This API element is subject to removal in a future version.

Method Summary

Modifier and Type	Method	Description
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)	Deprecated, for removal: This API element is subject to removal in a future version. Applies generally applicable optimizations: path expressions are sorted from more to less specific.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QueryJoinOptimizer

public QueryJoinOptimizer()

Deprecated, for removal: This API element is subject to removal in a future version.

QueryJoinOptimizer

public QueryJoinOptimizer(EvaluationStatistics statistics)

Deprecated, for removal: This API element is subject to removal in a future version.

QueryJoinOptimizer

public QueryJoinOptimizer(EvaluationStatistics statistics,
 boolean trackResultSize)

Deprecated, for removal: This API element is subject to removal in a future version.

Method Details

optimize

public void optimize(TupleExpr tupleExpr,
 Dataset dataset,
 BindingSet bindings)

Deprecated, for removal: This API element is subject to removal in a future version.

Description copied from class: QueryJoinOptimizer

Applies generally applicable optimizations: path expressions are sorted from more to less specific.

Specified by:

optimize in interface QueryOptimizer

Overrides:

optimize in class QueryJoinOptimizer

Parameters:

tupleExpr -